Headset



FIG. 1 is a perspective view of a headset showing my new design;

FIG. 2 is a front view thereof

FIG. 3 is a side view thereof

FIG. 4 is a top view thereof

FIG. 5 is a bottom view thereof

FIG. 6 is a rear view thereof; and,

FIG. 7 is an opposite side view thereof. 

The ornamental design for headset, as shown and described. 